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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
[deliverable/linux.git] / drivers / net / wireless / mac80211_hwsim.c
1 /*
2 * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 /*
12 * TODO:
13 * - Add TSF sync and fix IBSS beacon transmission by adding
14 * competition for "air time" at TBTT
15 * - RX filtering based on filter configuration (data->rx_filter)
16 */
17
18 #include <linux/list.h>
19 #include <linux/slab.h>
20 #include <linux/spinlock.h>
21 #include <net/dst.h>
22 #include <net/xfrm.h>
23 #include <net/mac80211.h>
24 #include <net/ieee80211_radiotap.h>
25 #include <linux/if_arp.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/etherdevice.h>
28 #include <linux/debugfs.h>
29 #include <linux/module.h>
30 #include <linux/ktime.h>
31 #include <net/genetlink.h>
32 #include "mac80211_hwsim.h"
33
34 #define WARN_QUEUE 100
35 #define MAX_QUEUE 200
36
37 MODULE_AUTHOR("Jouni Malinen");
38 MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
39 MODULE_LICENSE("GPL");
40
41 static u32 wmediumd_pid;
42
43 static int radios = 2;
44 module_param(radios, int, 0444);
45 MODULE_PARM_DESC(radios, "Number of simulated radios");
46
47 static bool fake_hw_scan;
48 module_param(fake_hw_scan, bool, 0444);
49 MODULE_PARM_DESC(fake_hw_scan, "Install fake (no-op) hw-scan handler");
50
51 /**
52 * enum hwsim_regtest - the type of regulatory tests we offer
53 *
54 * These are the different values you can use for the regtest
55 * module parameter. This is useful to help test world roaming
56 * and the driver regulatory_hint() call and combinations of these.
57 * If you want to do specific alpha2 regulatory domain tests simply
58 * use the userspace regulatory request as that will be respected as
59 * well without the need of this module parameter. This is designed
60 * only for testing the driver regulatory request, world roaming
61 * and all possible combinations.
62 *
63 * @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
64 * this is the default value.
65 * @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
66 * hint, only one driver regulatory hint will be sent as such the
67 * secondary radios are expected to follow.
68 * @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
69 * request with all radios reporting the same regulatory domain.
70 * @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
71 * different regulatory domains requests. Expected behaviour is for
72 * an intersection to occur but each device will still use their
73 * respective regulatory requested domains. Subsequent radios will
74 * use the resulting intersection.
75 * @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
76 * this by using a custom beacon-capable regulatory domain for the first
77 * radio. All other device world roam.
78 * @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
79 * domain requests. All radios will adhere to this custom world regulatory
80 * domain.
81 * @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
82 * domain requests. The first radio will adhere to the first custom world
83 * regulatory domain, the second one to the second custom world regulatory
84 * domain. All other devices will world roam.
85 * @HWSIM_REGTEST_STRICT_FOLLOW_: Used for testing strict regulatory domain
86 * settings, only the first radio will send a regulatory domain request
87 * and use strict settings. The rest of the radios are expected to follow.
88 * @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
89 * settings. All radios will adhere to this.
90 * @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
91 * domain settings, combined with secondary driver regulatory domain
92 * settings. The first radio will get a strict regulatory domain setting
93 * using the first driver regulatory request and the second radio will use
94 * non-strict settings using the second driver regulatory request. All
95 * other devices should follow the intersection created between the
96 * first two.
97 * @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
98 * at least 6 radios for a complete test. We will test in this order:
99 * 1 - driver custom world regulatory domain
100 * 2 - second custom world regulatory domain
101 * 3 - first driver regulatory domain request
102 * 4 - second driver regulatory domain request
103 * 5 - strict regulatory domain settings using the third driver regulatory
104 * domain request
105 * 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
106 * regulatory requests.
107 */
108 enum hwsim_regtest {
109 HWSIM_REGTEST_DISABLED = 0,
110 HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
111 HWSIM_REGTEST_DRIVER_REG_ALL = 2,
112 HWSIM_REGTEST_DIFF_COUNTRY = 3,
113 HWSIM_REGTEST_WORLD_ROAM = 4,
114 HWSIM_REGTEST_CUSTOM_WORLD = 5,
115 HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
116 HWSIM_REGTEST_STRICT_FOLLOW = 7,
117 HWSIM_REGTEST_STRICT_ALL = 8,
118 HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
119 HWSIM_REGTEST_ALL = 10,
120 };
121
122 /* Set to one of the HWSIM_REGTEST_* values above */
123 static int regtest = HWSIM_REGTEST_DISABLED;
124 module_param(regtest, int, 0444);
125 MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
126
127 static const char *hwsim_alpha2s[] = {
128 "FI",
129 "AL",
130 "US",
131 "DE",
132 "JP",
133 "AL",
134 };
135
136 static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
137 .n_reg_rules = 4,
138 .alpha2 = "99",
139 .reg_rules = {
140 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
141 REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
142 REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
143 REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
144 }
145 };
146
147 static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
148 .n_reg_rules = 2,
149 .alpha2 = "99",
150 .reg_rules = {
151 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
152 REG_RULE(5725-10, 5850+10, 40, 0, 30,
153 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS),
154 }
155 };
156
157 struct hwsim_vif_priv {
158 u32 magic;
159 u8 bssid[ETH_ALEN];
160 bool assoc;
161 u16 aid;
162 };
163
164 #define HWSIM_VIF_MAGIC 0x69537748
165
166 static inline void hwsim_check_magic(struct ieee80211_vif *vif)
167 {
168 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
169 WARN_ON(vp->magic != HWSIM_VIF_MAGIC);
170 }
171
172 static inline void hwsim_set_magic(struct ieee80211_vif *vif)
173 {
174 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
175 vp->magic = HWSIM_VIF_MAGIC;
176 }
177
178 static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
179 {
180 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
181 vp->magic = 0;
182 }
183
184 struct hwsim_sta_priv {
185 u32 magic;
186 };
187
188 #define HWSIM_STA_MAGIC 0x6d537748
189
190 static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
191 {
192 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
193 WARN_ON(sp->magic != HWSIM_STA_MAGIC);
194 }
195
196 static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
197 {
198 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
199 sp->magic = HWSIM_STA_MAGIC;
200 }
201
202 static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
203 {
204 struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
205 sp->magic = 0;
206 }
207
208 static struct class *hwsim_class;
209
210 static struct net_device *hwsim_mon; /* global monitor netdev */
211
212 #define CHAN2G(_freq) { \
213 .band = IEEE80211_BAND_2GHZ, \
214 .center_freq = (_freq), \
215 .hw_value = (_freq), \
216 .max_power = 20, \
217 }
218
219 #define CHAN5G(_freq) { \
220 .band = IEEE80211_BAND_5GHZ, \
221 .center_freq = (_freq), \
222 .hw_value = (_freq), \
223 .max_power = 20, \
224 }
225
226 static const struct ieee80211_channel hwsim_channels_2ghz[] = {
227 CHAN2G(2412), /* Channel 1 */
228 CHAN2G(2417), /* Channel 2 */
229 CHAN2G(2422), /* Channel 3 */
230 CHAN2G(2427), /* Channel 4 */
231 CHAN2G(2432), /* Channel 5 */
232 CHAN2G(2437), /* Channel 6 */
233 CHAN2G(2442), /* Channel 7 */
234 CHAN2G(2447), /* Channel 8 */
235 CHAN2G(2452), /* Channel 9 */
236 CHAN2G(2457), /* Channel 10 */
237 CHAN2G(2462), /* Channel 11 */
238 CHAN2G(2467), /* Channel 12 */
239 CHAN2G(2472), /* Channel 13 */
240 CHAN2G(2484), /* Channel 14 */
241 };
242
243 static const struct ieee80211_channel hwsim_channels_5ghz[] = {
244 CHAN5G(5180), /* Channel 36 */
245 CHAN5G(5200), /* Channel 40 */
246 CHAN5G(5220), /* Channel 44 */
247 CHAN5G(5240), /* Channel 48 */
248
249 CHAN5G(5260), /* Channel 52 */
250 CHAN5G(5280), /* Channel 56 */
251 CHAN5G(5300), /* Channel 60 */
252 CHAN5G(5320), /* Channel 64 */
253
254 CHAN5G(5500), /* Channel 100 */
255 CHAN5G(5520), /* Channel 104 */
256 CHAN5G(5540), /* Channel 108 */
257 CHAN5G(5560), /* Channel 112 */
258 CHAN5G(5580), /* Channel 116 */
259 CHAN5G(5600), /* Channel 120 */
260 CHAN5G(5620), /* Channel 124 */
261 CHAN5G(5640), /* Channel 128 */
262 CHAN5G(5660), /* Channel 132 */
263 CHAN5G(5680), /* Channel 136 */
264 CHAN5G(5700), /* Channel 140 */
265
266 CHAN5G(5745), /* Channel 149 */
267 CHAN5G(5765), /* Channel 153 */
268 CHAN5G(5785), /* Channel 157 */
269 CHAN5G(5805), /* Channel 161 */
270 CHAN5G(5825), /* Channel 165 */
271 };
272
273 static const struct ieee80211_rate hwsim_rates[] = {
274 { .bitrate = 10 },
275 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
276 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
277 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
278 { .bitrate = 60 },
279 { .bitrate = 90 },
280 { .bitrate = 120 },
281 { .bitrate = 180 },
282 { .bitrate = 240 },
283 { .bitrate = 360 },
284 { .bitrate = 480 },
285 { .bitrate = 540 }
286 };
287
288 static spinlock_t hwsim_radio_lock;
289 static struct list_head hwsim_radios;
290
291 struct mac80211_hwsim_data {
292 struct list_head list;
293 struct ieee80211_hw *hw;
294 struct device *dev;
295 struct ieee80211_supported_band bands[2];
296 struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
297 struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
298 struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
299
300 struct mac_address addresses[2];
301
302 struct ieee80211_channel *channel;
303 unsigned long beacon_int; /* in jiffies unit */
304 unsigned int rx_filter;
305 bool started, idle, scanning;
306 struct mutex mutex;
307 struct timer_list beacon_timer;
308 enum ps_mode {
309 PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
310 } ps;
311 bool ps_poll_pending;
312 struct dentry *debugfs;
313 struct dentry *debugfs_ps;
314
315 struct sk_buff_head pending; /* packets pending */
316 /*
317 * Only radios in the same group can communicate together (the
318 * channel has to match too). Each bit represents a group. A
319 * radio can be in more then one group.
320 */
321 u64 group;
322 struct dentry *debugfs_group;
323
324 int power_level;
325
326 /* difference between this hw's clock and the real clock, in usecs */
327 u64 tsf_offset;
328 };
329
330
331 struct hwsim_radiotap_hdr {
332 struct ieee80211_radiotap_header hdr;
333 __le64 rt_tsft;
334 u8 rt_flags;
335 u8 rt_rate;
336 __le16 rt_channel;
337 __le16 rt_chbitmask;
338 } __packed;
339
340 /* MAC80211_HWSIM netlinf family */
341 static struct genl_family hwsim_genl_family = {
342 .id = GENL_ID_GENERATE,
343 .hdrsize = 0,
344 .name = "MAC80211_HWSIM",
345 .version = 1,
346 .maxattr = HWSIM_ATTR_MAX,
347 };
348
349 /* MAC80211_HWSIM netlink policy */
350
351 static struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
352 [HWSIM_ATTR_ADDR_RECEIVER] = { .type = NLA_UNSPEC,
353 .len = 6*sizeof(u8) },
354 [HWSIM_ATTR_ADDR_TRANSMITTER] = { .type = NLA_UNSPEC,
355 .len = 6*sizeof(u8) },
356 [HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
357 .len = IEEE80211_MAX_DATA_LEN },
358 [HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
359 [HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
360 [HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
361 [HWSIM_ATTR_TX_INFO] = { .type = NLA_UNSPEC,
362 .len = IEEE80211_TX_MAX_RATES*sizeof(
363 struct hwsim_tx_rate)},
364 [HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
365 };
366
367 static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
368 struct net_device *dev)
369 {
370 /* TODO: allow packet injection */
371 dev_kfree_skb(skb);
372 return NETDEV_TX_OK;
373 }
374
375 static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
376 {
377 struct timeval tv = ktime_to_timeval(ktime_get_real());
378 u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
379 return cpu_to_le64(now + data->tsf_offset);
380 }
381
382 static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
383 struct ieee80211_vif *vif)
384 {
385 struct mac80211_hwsim_data *data = hw->priv;
386 return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
387 }
388
389 static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
390 struct ieee80211_vif *vif, u64 tsf)
391 {
392 struct mac80211_hwsim_data *data = hw->priv;
393 struct timeval tv = ktime_to_timeval(ktime_get_real());
394 u64 now = tv.tv_sec * USEC_PER_SEC + tv.tv_usec;
395 data->tsf_offset = tsf - now;
396 }
397
398 static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
399 struct sk_buff *tx_skb)
400 {
401 struct mac80211_hwsim_data *data = hw->priv;
402 struct sk_buff *skb;
403 struct hwsim_radiotap_hdr *hdr;
404 u16 flags;
405 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
406 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
407
408 if (!netif_running(hwsim_mon))
409 return;
410
411 skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
412 if (skb == NULL)
413 return;
414
415 hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr));
416 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
417 hdr->hdr.it_pad = 0;
418 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
419 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
420 (1 << IEEE80211_RADIOTAP_RATE) |
421 (1 << IEEE80211_RADIOTAP_TSFT) |
422 (1 << IEEE80211_RADIOTAP_CHANNEL));
423 hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
424 hdr->rt_flags = 0;
425 hdr->rt_rate = txrate->bitrate / 5;
426 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
427 flags = IEEE80211_CHAN_2GHZ;
428 if (txrate->flags & IEEE80211_RATE_ERP_G)
429 flags |= IEEE80211_CHAN_OFDM;
430 else
431 flags |= IEEE80211_CHAN_CCK;
432 hdr->rt_chbitmask = cpu_to_le16(flags);
433
434 skb->dev = hwsim_mon;
435 skb_set_mac_header(skb, 0);
436 skb->ip_summed = CHECKSUM_UNNECESSARY;
437 skb->pkt_type = PACKET_OTHERHOST;
438 skb->protocol = htons(ETH_P_802_2);
439 memset(skb->cb, 0, sizeof(skb->cb));
440 netif_rx(skb);
441 }
442
443
444 static void mac80211_hwsim_monitor_ack(struct ieee80211_hw *hw, const u8 *addr)
445 {
446 struct mac80211_hwsim_data *data = hw->priv;
447 struct sk_buff *skb;
448 struct hwsim_radiotap_hdr *hdr;
449 u16 flags;
450 struct ieee80211_hdr *hdr11;
451
452 if (!netif_running(hwsim_mon))
453 return;
454
455 skb = dev_alloc_skb(100);
456 if (skb == NULL)
457 return;
458
459 hdr = (struct hwsim_radiotap_hdr *) skb_put(skb, sizeof(*hdr));
460 hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
461 hdr->hdr.it_pad = 0;
462 hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
463 hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
464 (1 << IEEE80211_RADIOTAP_CHANNEL));
465 hdr->rt_flags = 0;
466 hdr->rt_rate = 0;
467 hdr->rt_channel = cpu_to_le16(data->channel->center_freq);
468 flags = IEEE80211_CHAN_2GHZ;
469 hdr->rt_chbitmask = cpu_to_le16(flags);
470
471 hdr11 = (struct ieee80211_hdr *) skb_put(skb, 10);
472 hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
473 IEEE80211_STYPE_ACK);
474 hdr11->duration_id = cpu_to_le16(0);
475 memcpy(hdr11->addr1, addr, ETH_ALEN);
476
477 skb->dev = hwsim_mon;
478 skb_set_mac_header(skb, 0);
479 skb->ip_summed = CHECKSUM_UNNECESSARY;
480 skb->pkt_type = PACKET_OTHERHOST;
481 skb->protocol = htons(ETH_P_802_2);
482 memset(skb->cb, 0, sizeof(skb->cb));
483 netif_rx(skb);
484 }
485
486
487 static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
488 struct sk_buff *skb)
489 {
490 switch (data->ps) {
491 case PS_DISABLED:
492 return true;
493 case PS_ENABLED:
494 return false;
495 case PS_AUTO_POLL:
496 /* TODO: accept (some) Beacons by default and other frames only
497 * if pending PS-Poll has been sent */
498 return true;
499 case PS_MANUAL_POLL:
500 /* Allow unicast frames to own address if there is a pending
501 * PS-Poll */
502 if (data->ps_poll_pending &&
503 memcmp(data->hw->wiphy->perm_addr, skb->data + 4,
504 ETH_ALEN) == 0) {
505 data->ps_poll_pending = false;
506 return true;
507 }
508 return false;
509 }
510
511 return true;
512 }
513
514
515 struct mac80211_hwsim_addr_match_data {
516 bool ret;
517 const u8 *addr;
518 };
519
520 static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
521 struct ieee80211_vif *vif)
522 {
523 struct mac80211_hwsim_addr_match_data *md = data;
524 if (memcmp(mac, md->addr, ETH_ALEN) == 0)
525 md->ret = true;
526 }
527
528
529 static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
530 const u8 *addr)
531 {
532 struct mac80211_hwsim_addr_match_data md;
533
534 if (memcmp(addr, data->hw->wiphy->perm_addr, ETH_ALEN) == 0)
535 return true;
536
537 md.ret = false;
538 md.addr = addr;
539 ieee80211_iterate_active_interfaces_atomic(data->hw,
540 mac80211_hwsim_addr_iter,
541 &md);
542
543 return md.ret;
544 }
545
546 static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
547 struct sk_buff *my_skb,
548 int dst_pid)
549 {
550 struct sk_buff *skb;
551 struct mac80211_hwsim_data *data = hw->priv;
552 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
553 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
554 void *msg_head;
555 unsigned int hwsim_flags = 0;
556 int i;
557 struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
558
559 if (data->idle) {
560 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
561 dev_kfree_skb(my_skb);
562 return;
563 }
564
565 if (data->ps != PS_DISABLED)
566 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
567 /* If the queue contains MAX_QUEUE skb's drop some */
568 if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
569 /* Droping until WARN_QUEUE level */
570 while (skb_queue_len(&data->pending) >= WARN_QUEUE)
571 skb_dequeue(&data->pending);
572 }
573
574 skb = genlmsg_new(NLMSG_GOODSIZE, GFP_ATOMIC);
575 if (skb == NULL)
576 goto nla_put_failure;
577
578 msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
579 HWSIM_CMD_FRAME);
580 if (msg_head == NULL) {
581 printk(KERN_DEBUG "mac80211_hwsim: problem with msg_head\n");
582 goto nla_put_failure;
583 }
584
585 if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
586 sizeof(struct mac_address), data->addresses[1].addr))
587 goto nla_put_failure;
588
589 /* We get the skb->data */
590 if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
591 goto nla_put_failure;
592
593 /* We get the flags for this transmission, and we translate them to
594 wmediumd flags */
595
596 if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
597 hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
598
599 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
600 hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
601
602 if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
603 goto nla_put_failure;
604
605 /* We get the tx control (rate and retries) info*/
606
607 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
608 tx_attempts[i].idx = info->status.rates[i].idx;
609 tx_attempts[i].count = info->status.rates[i].count;
610 }
611
612 if (nla_put(skb, HWSIM_ATTR_TX_INFO,
613 sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
614 tx_attempts))
615 goto nla_put_failure;
616
617 /* We create a cookie to identify this skb */
618 if (nla_put_u64(skb, HWSIM_ATTR_COOKIE, (unsigned long) my_skb))
619 goto nla_put_failure;
620
621 genlmsg_end(skb, msg_head);
622 genlmsg_unicast(&init_net, skb, dst_pid);
623
624 /* Enqueue the packet */
625 skb_queue_tail(&data->pending, my_skb);
626 return;
627
628 nla_put_failure:
629 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
630 }
631
632 static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
633 struct sk_buff *skb)
634 {
635 struct mac80211_hwsim_data *data = hw->priv, *data2;
636 bool ack = false;
637 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
638 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
639 struct ieee80211_rx_status rx_status;
640 struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
641
642 if (data->idle) {
643 wiphy_debug(hw->wiphy, "Trying to TX when idle - reject\n");
644 return false;
645 }
646
647 memset(&rx_status, 0, sizeof(rx_status));
648 rx_status.flag |= RX_FLAG_MACTIME_MPDU;
649 rx_status.freq = data->channel->center_freq;
650 rx_status.band = data->channel->band;
651 rx_status.rate_idx = info->control.rates[0].idx;
652 if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
653 rx_status.flag |= RX_FLAG_HT;
654 if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
655 rx_status.flag |= RX_FLAG_40MHZ;
656 if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
657 rx_status.flag |= RX_FLAG_SHORT_GI;
658 /* TODO: simulate real signal strength (and optional packet loss) */
659 rx_status.signal = data->power_level - 50;
660
661 if (data->ps != PS_DISABLED)
662 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
663
664 /* release the skb's source info */
665 skb_orphan(skb);
666 skb_dst_drop(skb);
667 skb->mark = 0;
668 secpath_reset(skb);
669 nf_reset(skb);
670
671 /* Copy skb to all enabled radios that are on the current frequency */
672 spin_lock(&hwsim_radio_lock);
673 list_for_each_entry(data2, &hwsim_radios, list) {
674 struct sk_buff *nskb;
675 struct ieee80211_mgmt *mgmt;
676
677 if (data == data2)
678 continue;
679
680 if (data2->idle || !data2->started ||
681 !hwsim_ps_rx_ok(data2, skb) ||
682 !data->channel || !data2->channel ||
683 data->channel->center_freq != data2->channel->center_freq ||
684 !(data->group & data2->group))
685 continue;
686
687 nskb = skb_copy(skb, GFP_ATOMIC);
688 if (nskb == NULL)
689 continue;
690
691 if (mac80211_hwsim_addr_match(data2, hdr->addr1))
692 ack = true;
693
694 /* set bcn timestamp relative to receiver mactime */
695 rx_status.mactime =
696 le64_to_cpu(__mac80211_hwsim_get_tsf(data2));
697 mgmt = (struct ieee80211_mgmt *) nskb->data;
698 if (ieee80211_is_beacon(mgmt->frame_control) ||
699 ieee80211_is_probe_resp(mgmt->frame_control))
700 mgmt->u.beacon.timestamp = cpu_to_le64(
701 rx_status.mactime +
702 (data->tsf_offset - data2->tsf_offset) +
703 24 * 8 * 10 / txrate->bitrate);
704
705 memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
706 ieee80211_rx_irqsafe(data2->hw, nskb);
707 }
708 spin_unlock(&hwsim_radio_lock);
709
710 return ack;
711 }
712
713 static void mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
714 {
715 bool ack;
716 struct ieee80211_tx_info *txi;
717 u32 _pid;
718
719 mac80211_hwsim_monitor_rx(hw, skb);
720
721 if (skb->len < 10) {
722 /* Should not happen; just a sanity check for addr1 use */
723 dev_kfree_skb(skb);
724 return;
725 }
726
727 /* wmediumd mode check */
728 _pid = ACCESS_ONCE(wmediumd_pid);
729
730 if (_pid)
731 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
732
733 /* NO wmediumd detected, perfect medium simulation */
734 ack = mac80211_hwsim_tx_frame_no_nl(hw, skb);
735
736 if (ack && skb->len >= 16) {
737 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
738 mac80211_hwsim_monitor_ack(hw, hdr->addr2);
739 }
740
741 txi = IEEE80211_SKB_CB(skb);
742
743 if (txi->control.vif)
744 hwsim_check_magic(txi->control.vif);
745 if (txi->control.sta)
746 hwsim_check_sta_magic(txi->control.sta);
747
748 ieee80211_tx_info_clear_status(txi);
749 if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
750 txi->flags |= IEEE80211_TX_STAT_ACK;
751 ieee80211_tx_status_irqsafe(hw, skb);
752 }
753
754
755 static int mac80211_hwsim_start(struct ieee80211_hw *hw)
756 {
757 struct mac80211_hwsim_data *data = hw->priv;
758 wiphy_debug(hw->wiphy, "%s\n", __func__);
759 data->started = true;
760 return 0;
761 }
762
763
764 static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
765 {
766 struct mac80211_hwsim_data *data = hw->priv;
767 data->started = false;
768 del_timer(&data->beacon_timer);
769 wiphy_debug(hw->wiphy, "%s\n", __func__);
770 }
771
772
773 static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
774 struct ieee80211_vif *vif)
775 {
776 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
777 __func__, ieee80211_vif_type_p2p(vif),
778 vif->addr);
779 hwsim_set_magic(vif);
780 return 0;
781 }
782
783
784 static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
785 struct ieee80211_vif *vif,
786 enum nl80211_iftype newtype,
787 bool newp2p)
788 {
789 newtype = ieee80211_iftype_p2p(newtype, newp2p);
790 wiphy_debug(hw->wiphy,
791 "%s (old type=%d, new type=%d, mac_addr=%pM)\n",
792 __func__, ieee80211_vif_type_p2p(vif),
793 newtype, vif->addr);
794 hwsim_check_magic(vif);
795
796 return 0;
797 }
798
799 static void mac80211_hwsim_remove_interface(
800 struct ieee80211_hw *hw, struct ieee80211_vif *vif)
801 {
802 wiphy_debug(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
803 __func__, ieee80211_vif_type_p2p(vif),
804 vif->addr);
805 hwsim_check_magic(vif);
806 hwsim_clear_magic(vif);
807 }
808
809
810 static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
811 struct ieee80211_vif *vif)
812 {
813 struct ieee80211_hw *hw = arg;
814 struct sk_buff *skb;
815 struct ieee80211_tx_info *info;
816 u32 _pid;
817
818 hwsim_check_magic(vif);
819
820 if (vif->type != NL80211_IFTYPE_AP &&
821 vif->type != NL80211_IFTYPE_MESH_POINT &&
822 vif->type != NL80211_IFTYPE_ADHOC)
823 return;
824
825 skb = ieee80211_beacon_get(hw, vif);
826 if (skb == NULL)
827 return;
828 info = IEEE80211_SKB_CB(skb);
829
830 mac80211_hwsim_monitor_rx(hw, skb);
831
832 /* wmediumd mode check */
833 _pid = ACCESS_ONCE(wmediumd_pid);
834
835 if (_pid)
836 return mac80211_hwsim_tx_frame_nl(hw, skb, _pid);
837
838 mac80211_hwsim_tx_frame_no_nl(hw, skb);
839 dev_kfree_skb(skb);
840 }
841
842
843 static void mac80211_hwsim_beacon(unsigned long arg)
844 {
845 struct ieee80211_hw *hw = (struct ieee80211_hw *) arg;
846 struct mac80211_hwsim_data *data = hw->priv;
847
848 if (!data->started)
849 return;
850
851 ieee80211_iterate_active_interfaces_atomic(
852 hw, mac80211_hwsim_beacon_tx, hw);
853
854 data->beacon_timer.expires = jiffies + data->beacon_int;
855 add_timer(&data->beacon_timer);
856 }
857
858 static const char *hwsim_chantypes[] = {
859 [NL80211_CHAN_NO_HT] = "noht",
860 [NL80211_CHAN_HT20] = "ht20",
861 [NL80211_CHAN_HT40MINUS] = "ht40-",
862 [NL80211_CHAN_HT40PLUS] = "ht40+",
863 };
864
865 static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
866 {
867 struct mac80211_hwsim_data *data = hw->priv;
868 struct ieee80211_conf *conf = &hw->conf;
869 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
870 [IEEE80211_SMPS_AUTOMATIC] = "auto",
871 [IEEE80211_SMPS_OFF] = "off",
872 [IEEE80211_SMPS_STATIC] = "static",
873 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
874 };
875
876 wiphy_debug(hw->wiphy,
877 "%s (freq=%d/%s idle=%d ps=%d smps=%s)\n",
878 __func__,
879 conf->channel->center_freq,
880 hwsim_chantypes[conf->channel_type],
881 !!(conf->flags & IEEE80211_CONF_IDLE),
882 !!(conf->flags & IEEE80211_CONF_PS),
883 smps_modes[conf->smps_mode]);
884
885 data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
886
887 data->channel = conf->channel;
888 data->power_level = conf->power_level;
889 if (!data->started || !data->beacon_int)
890 del_timer(&data->beacon_timer);
891 else
892 mod_timer(&data->beacon_timer, jiffies + data->beacon_int);
893
894 return 0;
895 }
896
897
898 static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
899 unsigned int changed_flags,
900 unsigned int *total_flags,u64 multicast)
901 {
902 struct mac80211_hwsim_data *data = hw->priv;
903
904 wiphy_debug(hw->wiphy, "%s\n", __func__);
905
906 data->rx_filter = 0;
907 if (*total_flags & FIF_PROMISC_IN_BSS)
908 data->rx_filter |= FIF_PROMISC_IN_BSS;
909 if (*total_flags & FIF_ALLMULTI)
910 data->rx_filter |= FIF_ALLMULTI;
911
912 *total_flags = data->rx_filter;
913 }
914
915 static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
916 struct ieee80211_vif *vif,
917 struct ieee80211_bss_conf *info,
918 u32 changed)
919 {
920 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
921 struct mac80211_hwsim_data *data = hw->priv;
922
923 hwsim_check_magic(vif);
924
925 wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
926
927 if (changed & BSS_CHANGED_BSSID) {
928 wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
929 __func__, info->bssid);
930 memcpy(vp->bssid, info->bssid, ETH_ALEN);
931 }
932
933 if (changed & BSS_CHANGED_ASSOC) {
934 wiphy_debug(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
935 info->assoc, info->aid);
936 vp->assoc = info->assoc;
937 vp->aid = info->aid;
938 }
939
940 if (changed & BSS_CHANGED_BEACON_INT) {
941 wiphy_debug(hw->wiphy, " BCNINT: %d\n", info->beacon_int);
942 data->beacon_int = 1024 * info->beacon_int / 1000 * HZ / 1000;
943 if (WARN_ON(!data->beacon_int))
944 data->beacon_int = 1;
945 if (data->started)
946 mod_timer(&data->beacon_timer,
947 jiffies + data->beacon_int);
948 }
949
950 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
951 wiphy_debug(hw->wiphy, " ERP_CTS_PROT: %d\n",
952 info->use_cts_prot);
953 }
954
955 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
956 wiphy_debug(hw->wiphy, " ERP_PREAMBLE: %d\n",
957 info->use_short_preamble);
958 }
959
960 if (changed & BSS_CHANGED_ERP_SLOT) {
961 wiphy_debug(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
962 }
963
964 if (changed & BSS_CHANGED_HT) {
965 wiphy_debug(hw->wiphy, " HT: op_mode=0x%x, chantype=%s\n",
966 info->ht_operation_mode,
967 hwsim_chantypes[info->channel_type]);
968 }
969
970 if (changed & BSS_CHANGED_BASIC_RATES) {
971 wiphy_debug(hw->wiphy, " BASIC_RATES: 0x%llx\n",
972 (unsigned long long) info->basic_rates);
973 }
974 }
975
976 static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
977 struct ieee80211_vif *vif,
978 struct ieee80211_sta *sta)
979 {
980 hwsim_check_magic(vif);
981 hwsim_set_sta_magic(sta);
982
983 return 0;
984 }
985
986 static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
987 struct ieee80211_vif *vif,
988 struct ieee80211_sta *sta)
989 {
990 hwsim_check_magic(vif);
991 hwsim_clear_sta_magic(sta);
992
993 return 0;
994 }
995
996 static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
997 struct ieee80211_vif *vif,
998 enum sta_notify_cmd cmd,
999 struct ieee80211_sta *sta)
1000 {
1001 hwsim_check_magic(vif);
1002
1003 switch (cmd) {
1004 case STA_NOTIFY_SLEEP:
1005 case STA_NOTIFY_AWAKE:
1006 /* TODO: make good use of these flags */
1007 break;
1008 default:
1009 WARN(1, "Invalid sta notify: %d\n", cmd);
1010 break;
1011 }
1012 }
1013
1014 static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
1015 struct ieee80211_sta *sta,
1016 bool set)
1017 {
1018 hwsim_check_sta_magic(sta);
1019 return 0;
1020 }
1021
1022 static int mac80211_hwsim_conf_tx(
1023 struct ieee80211_hw *hw,
1024 struct ieee80211_vif *vif, u16 queue,
1025 const struct ieee80211_tx_queue_params *params)
1026 {
1027 wiphy_debug(hw->wiphy,
1028 "%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
1029 __func__, queue,
1030 params->txop, params->cw_min,
1031 params->cw_max, params->aifs);
1032 return 0;
1033 }
1034
1035 static int mac80211_hwsim_get_survey(
1036 struct ieee80211_hw *hw, int idx,
1037 struct survey_info *survey)
1038 {
1039 struct ieee80211_conf *conf = &hw->conf;
1040
1041 wiphy_debug(hw->wiphy, "%s (idx=%d)\n", __func__, idx);
1042
1043 if (idx != 0)
1044 return -ENOENT;
1045
1046 /* Current channel */
1047 survey->channel = conf->channel;
1048
1049 /*
1050 * Magically conjured noise level --- this is only ok for simulated hardware.
1051 *
1052 * A real driver which cannot determine the real channel noise MUST NOT
1053 * report any noise, especially not a magically conjured one :-)
1054 */
1055 survey->filled = SURVEY_INFO_NOISE_DBM;
1056 survey->noise = -92;
1057
1058 return 0;
1059 }
1060
1061 #ifdef CONFIG_NL80211_TESTMODE
1062 /*
1063 * This section contains example code for using netlink
1064 * attributes with the testmode command in nl80211.
1065 */
1066
1067 /* These enums need to be kept in sync with userspace */
1068 enum hwsim_testmode_attr {
1069 __HWSIM_TM_ATTR_INVALID = 0,
1070 HWSIM_TM_ATTR_CMD = 1,
1071 HWSIM_TM_ATTR_PS = 2,
1072
1073 /* keep last */
1074 __HWSIM_TM_ATTR_AFTER_LAST,
1075 HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
1076 };
1077
1078 enum hwsim_testmode_cmd {
1079 HWSIM_TM_CMD_SET_PS = 0,
1080 HWSIM_TM_CMD_GET_PS = 1,
1081 };
1082
1083 static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
1084 [HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
1085 [HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
1086 };
1087
1088 static int hwsim_fops_ps_write(void *dat, u64 val);
1089
1090 static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
1091 void *data, int len)
1092 {
1093 struct mac80211_hwsim_data *hwsim = hw->priv;
1094 struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
1095 struct sk_buff *skb;
1096 int err, ps;
1097
1098 err = nla_parse(tb, HWSIM_TM_ATTR_MAX, data, len,
1099 hwsim_testmode_policy);
1100 if (err)
1101 return err;
1102
1103 if (!tb[HWSIM_TM_ATTR_CMD])
1104 return -EINVAL;
1105
1106 switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
1107 case HWSIM_TM_CMD_SET_PS:
1108 if (!tb[HWSIM_TM_ATTR_PS])
1109 return -EINVAL;
1110 ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
1111 return hwsim_fops_ps_write(hwsim, ps);
1112 case HWSIM_TM_CMD_GET_PS:
1113 skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
1114 nla_total_size(sizeof(u32)));
1115 if (!skb)
1116 return -ENOMEM;
1117 if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
1118 goto nla_put_failure;
1119 return cfg80211_testmode_reply(skb);
1120 default:
1121 return -EOPNOTSUPP;
1122 }
1123
1124 nla_put_failure:
1125 kfree_skb(skb);
1126 return -ENOBUFS;
1127 }
1128 #endif
1129
1130 static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
1131 struct ieee80211_vif *vif,
1132 enum ieee80211_ampdu_mlme_action action,
1133 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
1134 u8 buf_size)
1135 {
1136 switch (action) {
1137 case IEEE80211_AMPDU_TX_START:
1138 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1139 break;
1140 case IEEE80211_AMPDU_TX_STOP:
1141 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1142 break;
1143 case IEEE80211_AMPDU_TX_OPERATIONAL:
1144 break;
1145 case IEEE80211_AMPDU_RX_START:
1146 case IEEE80211_AMPDU_RX_STOP:
1147 break;
1148 default:
1149 return -EOPNOTSUPP;
1150 }
1151
1152 return 0;
1153 }
1154
1155 static void mac80211_hwsim_flush(struct ieee80211_hw *hw, bool drop)
1156 {
1157 /* Not implemented, queues only on kernel side */
1158 }
1159
1160 struct hw_scan_done {
1161 struct delayed_work w;
1162 struct ieee80211_hw *hw;
1163 };
1164
1165 static void hw_scan_done(struct work_struct *work)
1166 {
1167 struct hw_scan_done *hsd =
1168 container_of(work, struct hw_scan_done, w.work);
1169
1170 ieee80211_scan_completed(hsd->hw, false);
1171 kfree(hsd);
1172 }
1173
1174 static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
1175 struct ieee80211_vif *vif,
1176 struct cfg80211_scan_request *req)
1177 {
1178 struct hw_scan_done *hsd = kzalloc(sizeof(*hsd), GFP_KERNEL);
1179 int i;
1180
1181 if (!hsd)
1182 return -ENOMEM;
1183
1184 hsd->hw = hw;
1185 INIT_DELAYED_WORK(&hsd->w, hw_scan_done);
1186
1187 printk(KERN_DEBUG "hwsim hw_scan request\n");
1188 for (i = 0; i < req->n_channels; i++)
1189 printk(KERN_DEBUG "hwsim hw_scan freq %d\n",
1190 req->channels[i]->center_freq);
1191 print_hex_dump(KERN_DEBUG, "scan IEs: ", DUMP_PREFIX_OFFSET,
1192 16, 1, req->ie, req->ie_len, 1);
1193
1194 ieee80211_queue_delayed_work(hw, &hsd->w, 2 * HZ);
1195
1196 return 0;
1197 }
1198
1199 static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw)
1200 {
1201 struct mac80211_hwsim_data *hwsim = hw->priv;
1202
1203 mutex_lock(&hwsim->mutex);
1204
1205 if (hwsim->scanning) {
1206 printk(KERN_DEBUG "two hwsim sw_scans detected!\n");
1207 goto out;
1208 }
1209
1210 printk(KERN_DEBUG "hwsim sw_scan request, prepping stuff\n");
1211 hwsim->scanning = true;
1212
1213 out:
1214 mutex_unlock(&hwsim->mutex);
1215 }
1216
1217 static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw)
1218 {
1219 struct mac80211_hwsim_data *hwsim = hw->priv;
1220
1221 mutex_lock(&hwsim->mutex);
1222
1223 printk(KERN_DEBUG "hwsim sw_scan_complete\n");
1224 hwsim->scanning = false;
1225
1226 mutex_unlock(&hwsim->mutex);
1227 }
1228
1229 static struct ieee80211_ops mac80211_hwsim_ops =
1230 {
1231 .tx = mac80211_hwsim_tx,
1232 .start = mac80211_hwsim_start,
1233 .stop = mac80211_hwsim_stop,
1234 .add_interface = mac80211_hwsim_add_interface,
1235 .change_interface = mac80211_hwsim_change_interface,
1236 .remove_interface = mac80211_hwsim_remove_interface,
1237 .config = mac80211_hwsim_config,
1238 .configure_filter = mac80211_hwsim_configure_filter,
1239 .bss_info_changed = mac80211_hwsim_bss_info_changed,
1240 .sta_add = mac80211_hwsim_sta_add,
1241 .sta_remove = mac80211_hwsim_sta_remove,
1242 .sta_notify = mac80211_hwsim_sta_notify,
1243 .set_tim = mac80211_hwsim_set_tim,
1244 .conf_tx = mac80211_hwsim_conf_tx,
1245 .get_survey = mac80211_hwsim_get_survey,
1246 CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd)
1247 .ampdu_action = mac80211_hwsim_ampdu_action,
1248 .sw_scan_start = mac80211_hwsim_sw_scan,
1249 .sw_scan_complete = mac80211_hwsim_sw_scan_complete,
1250 .flush = mac80211_hwsim_flush,
1251 .get_tsf = mac80211_hwsim_get_tsf,
1252 .set_tsf = mac80211_hwsim_set_tsf,
1253 };
1254
1255
1256 static void mac80211_hwsim_free(void)
1257 {
1258 struct list_head tmplist, *i, *tmp;
1259 struct mac80211_hwsim_data *data, *tmpdata;
1260
1261 INIT_LIST_HEAD(&tmplist);
1262
1263 spin_lock_bh(&hwsim_radio_lock);
1264 list_for_each_safe(i, tmp, &hwsim_radios)
1265 list_move(i, &tmplist);
1266 spin_unlock_bh(&hwsim_radio_lock);
1267
1268 list_for_each_entry_safe(data, tmpdata, &tmplist, list) {
1269 debugfs_remove(data->debugfs_group);
1270 debugfs_remove(data->debugfs_ps);
1271 debugfs_remove(data->debugfs);
1272 ieee80211_unregister_hw(data->hw);
1273 device_unregister(data->dev);
1274 ieee80211_free_hw(data->hw);
1275 }
1276 class_destroy(hwsim_class);
1277 }
1278
1279
1280 static struct device_driver mac80211_hwsim_driver = {
1281 .name = "mac80211_hwsim"
1282 };
1283
1284 static const struct net_device_ops hwsim_netdev_ops = {
1285 .ndo_start_xmit = hwsim_mon_xmit,
1286 .ndo_change_mtu = eth_change_mtu,
1287 .ndo_set_mac_address = eth_mac_addr,
1288 .ndo_validate_addr = eth_validate_addr,
1289 };
1290
1291 static void hwsim_mon_setup(struct net_device *dev)
1292 {
1293 dev->netdev_ops = &hwsim_netdev_ops;
1294 dev->destructor = free_netdev;
1295 ether_setup(dev);
1296 dev->tx_queue_len = 0;
1297 dev->type = ARPHRD_IEEE80211_RADIOTAP;
1298 memset(dev->dev_addr, 0, ETH_ALEN);
1299 dev->dev_addr[0] = 0x12;
1300 }
1301
1302
1303 static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
1304 {
1305 struct mac80211_hwsim_data *data = dat;
1306 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1307 struct sk_buff *skb;
1308 struct ieee80211_pspoll *pspoll;
1309 u32 _pid;
1310
1311 if (!vp->assoc)
1312 return;
1313
1314 wiphy_debug(data->hw->wiphy,
1315 "%s: send PS-Poll to %pM for aid %d\n",
1316 __func__, vp->bssid, vp->aid);
1317
1318 skb = dev_alloc_skb(sizeof(*pspoll));
1319 if (!skb)
1320 return;
1321 pspoll = (void *) skb_put(skb, sizeof(*pspoll));
1322 pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
1323 IEEE80211_STYPE_PSPOLL |
1324 IEEE80211_FCTL_PM);
1325 pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
1326 memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
1327 memcpy(pspoll->ta, mac, ETH_ALEN);
1328
1329 /* wmediumd mode check */
1330 _pid = ACCESS_ONCE(wmediumd_pid);
1331
1332 if (_pid)
1333 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1334
1335 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1336 printk(KERN_DEBUG "%s: PS-poll frame not ack'ed\n", __func__);
1337 dev_kfree_skb(skb);
1338 }
1339
1340
1341 static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
1342 struct ieee80211_vif *vif, int ps)
1343 {
1344 struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
1345 struct sk_buff *skb;
1346 struct ieee80211_hdr *hdr;
1347 u32 _pid;
1348
1349 if (!vp->assoc)
1350 return;
1351
1352 wiphy_debug(data->hw->wiphy,
1353 "%s: send data::nullfunc to %pM ps=%d\n",
1354 __func__, vp->bssid, ps);
1355
1356 skb = dev_alloc_skb(sizeof(*hdr));
1357 if (!skb)
1358 return;
1359 hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN);
1360 hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1361 IEEE80211_STYPE_NULLFUNC |
1362 (ps ? IEEE80211_FCTL_PM : 0));
1363 hdr->duration_id = cpu_to_le16(0);
1364 memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
1365 memcpy(hdr->addr2, mac, ETH_ALEN);
1366 memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
1367
1368 /* wmediumd mode check */
1369 _pid = ACCESS_ONCE(wmediumd_pid);
1370
1371 if (_pid)
1372 return mac80211_hwsim_tx_frame_nl(data->hw, skb, _pid);
1373
1374 if (!mac80211_hwsim_tx_frame_no_nl(data->hw, skb))
1375 printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__);
1376 dev_kfree_skb(skb);
1377 }
1378
1379
1380 static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
1381 struct ieee80211_vif *vif)
1382 {
1383 struct mac80211_hwsim_data *data = dat;
1384 hwsim_send_nullfunc(data, mac, vif, 1);
1385 }
1386
1387
1388 static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
1389 struct ieee80211_vif *vif)
1390 {
1391 struct mac80211_hwsim_data *data = dat;
1392 hwsim_send_nullfunc(data, mac, vif, 0);
1393 }
1394
1395
1396 static int hwsim_fops_ps_read(void *dat, u64 *val)
1397 {
1398 struct mac80211_hwsim_data *data = dat;
1399 *val = data->ps;
1400 return 0;
1401 }
1402
1403 static int hwsim_fops_ps_write(void *dat, u64 val)
1404 {
1405 struct mac80211_hwsim_data *data = dat;
1406 enum ps_mode old_ps;
1407
1408 if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
1409 val != PS_MANUAL_POLL)
1410 return -EINVAL;
1411
1412 old_ps = data->ps;
1413 data->ps = val;
1414
1415 if (val == PS_MANUAL_POLL) {
1416 ieee80211_iterate_active_interfaces(data->hw,
1417 hwsim_send_ps_poll, data);
1418 data->ps_poll_pending = true;
1419 } else if (old_ps == PS_DISABLED && val != PS_DISABLED) {
1420 ieee80211_iterate_active_interfaces(data->hw,
1421 hwsim_send_nullfunc_ps,
1422 data);
1423 } else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
1424 ieee80211_iterate_active_interfaces(data->hw,
1425 hwsim_send_nullfunc_no_ps,
1426 data);
1427 }
1428
1429 return 0;
1430 }
1431
1432 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
1433 "%llu\n");
1434
1435
1436 static int hwsim_fops_group_read(void *dat, u64 *val)
1437 {
1438 struct mac80211_hwsim_data *data = dat;
1439 *val = data->group;
1440 return 0;
1441 }
1442
1443 static int hwsim_fops_group_write(void *dat, u64 val)
1444 {
1445 struct mac80211_hwsim_data *data = dat;
1446 data->group = val;
1447 return 0;
1448 }
1449
1450 DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_group,
1451 hwsim_fops_group_read, hwsim_fops_group_write,
1452 "%llx\n");
1453
1454 static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(
1455 struct mac_address *addr)
1456 {
1457 struct mac80211_hwsim_data *data;
1458 bool _found = false;
1459
1460 spin_lock_bh(&hwsim_radio_lock);
1461 list_for_each_entry(data, &hwsim_radios, list) {
1462 if (memcmp(data->addresses[1].addr, addr,
1463 sizeof(struct mac_address)) == 0) {
1464 _found = true;
1465 break;
1466 }
1467 }
1468 spin_unlock_bh(&hwsim_radio_lock);
1469
1470 if (!_found)
1471 return NULL;
1472
1473 return data;
1474 }
1475
1476 static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
1477 struct genl_info *info)
1478 {
1479
1480 struct ieee80211_hdr *hdr;
1481 struct mac80211_hwsim_data *data2;
1482 struct ieee80211_tx_info *txi;
1483 struct hwsim_tx_rate *tx_attempts;
1484 struct sk_buff __user *ret_skb;
1485 struct sk_buff *skb, *tmp;
1486 struct mac_address *src;
1487 unsigned int hwsim_flags;
1488
1489 int i;
1490 bool found = false;
1491
1492 if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
1493 !info->attrs[HWSIM_ATTR_FLAGS] ||
1494 !info->attrs[HWSIM_ATTR_COOKIE] ||
1495 !info->attrs[HWSIM_ATTR_TX_INFO])
1496 goto out;
1497
1498 src = (struct mac_address *)nla_data(
1499 info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
1500 hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
1501
1502 ret_skb = (struct sk_buff __user *)
1503 (unsigned long) nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
1504
1505 data2 = get_hwsim_data_ref_from_addr(src);
1506
1507 if (data2 == NULL)
1508 goto out;
1509
1510 /* look for the skb matching the cookie passed back from user */
1511 skb_queue_walk_safe(&data2->pending, skb, tmp) {
1512 if (skb == ret_skb) {
1513 skb_unlink(skb, &data2->pending);
1514 found = true;
1515 break;
1516 }
1517 }
1518
1519 /* not found */
1520 if (!found)
1521 goto out;
1522
1523 /* Tx info received because the frame was broadcasted on user space,
1524 so we get all the necessary info: tx attempts and skb control buff */
1525
1526 tx_attempts = (struct hwsim_tx_rate *)nla_data(
1527 info->attrs[HWSIM_ATTR_TX_INFO]);
1528
1529 /* now send back TX status */
1530 txi = IEEE80211_SKB_CB(skb);
1531
1532 if (txi->control.vif)
1533 hwsim_check_magic(txi->control.vif);
1534 if (txi->control.sta)
1535 hwsim_check_sta_magic(txi->control.sta);
1536
1537 ieee80211_tx_info_clear_status(txi);
1538
1539 for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
1540 txi->status.rates[i].idx = tx_attempts[i].idx;
1541 txi->status.rates[i].count = tx_attempts[i].count;
1542 /*txi->status.rates[i].flags = 0;*/
1543 }
1544
1545 txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1546
1547 if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
1548 (hwsim_flags & HWSIM_TX_STAT_ACK)) {
1549 if (skb->len >= 16) {
1550 hdr = (struct ieee80211_hdr *) skb->data;
1551 mac80211_hwsim_monitor_ack(data2->hw, hdr->addr2);
1552 }
1553 }
1554 ieee80211_tx_status_irqsafe(data2->hw, skb);
1555 return 0;
1556 out:
1557 return -EINVAL;
1558
1559 }
1560
1561 static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
1562 struct genl_info *info)
1563 {
1564
1565 struct mac80211_hwsim_data *data2;
1566 struct ieee80211_rx_status rx_status;
1567 struct mac_address *dst;
1568 int frame_data_len;
1569 char *frame_data;
1570 struct sk_buff *skb = NULL;
1571
1572 if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
1573 !info->attrs[HWSIM_ATTR_FRAME] ||
1574 !info->attrs[HWSIM_ATTR_RX_RATE] ||
1575 !info->attrs[HWSIM_ATTR_SIGNAL])
1576 goto out;
1577
1578 dst = (struct mac_address *)nla_data(
1579 info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
1580
1581 frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
1582 frame_data = (char *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
1583
1584 /* Allocate new skb here */
1585 skb = alloc_skb(frame_data_len, GFP_KERNEL);
1586 if (skb == NULL)
1587 goto err;
1588
1589 if (frame_data_len <= IEEE80211_MAX_DATA_LEN) {
1590 /* Copy the data */
1591 memcpy(skb_put(skb, frame_data_len), frame_data,
1592 frame_data_len);
1593 } else
1594 goto err;
1595
1596 data2 = get_hwsim_data_ref_from_addr(dst);
1597
1598 if (data2 == NULL)
1599 goto out;
1600
1601 /* check if radio is configured properly */
1602
1603 if (data2->idle || !data2->started || !data2->channel)
1604 goto out;
1605
1606 /*A frame is received from user space*/
1607 memset(&rx_status, 0, sizeof(rx_status));
1608 rx_status.freq = data2->channel->center_freq;
1609 rx_status.band = data2->channel->band;
1610 rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
1611 rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
1612
1613 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
1614 ieee80211_rx_irqsafe(data2->hw, skb);
1615
1616 return 0;
1617 err:
1618 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1619 goto out;
1620 out:
1621 dev_kfree_skb(skb);
1622 return -EINVAL;
1623 }
1624
1625 static int hwsim_register_received_nl(struct sk_buff *skb_2,
1626 struct genl_info *info)
1627 {
1628 if (info == NULL)
1629 goto out;
1630
1631 wmediumd_pid = info->snd_pid;
1632
1633 printk(KERN_DEBUG "mac80211_hwsim: received a REGISTER, "
1634 "switching to wmediumd mode with pid %d\n", info->snd_pid);
1635
1636 return 0;
1637 out:
1638 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1639 return -EINVAL;
1640 }
1641
1642 /* Generic Netlink operations array */
1643 static struct genl_ops hwsim_ops[] = {
1644 {
1645 .cmd = HWSIM_CMD_REGISTER,
1646 .policy = hwsim_genl_policy,
1647 .doit = hwsim_register_received_nl,
1648 .flags = GENL_ADMIN_PERM,
1649 },
1650 {
1651 .cmd = HWSIM_CMD_FRAME,
1652 .policy = hwsim_genl_policy,
1653 .doit = hwsim_cloned_frame_received_nl,
1654 },
1655 {
1656 .cmd = HWSIM_CMD_TX_INFO_FRAME,
1657 .policy = hwsim_genl_policy,
1658 .doit = hwsim_tx_info_frame_received_nl,
1659 },
1660 };
1661
1662 static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
1663 unsigned long state,
1664 void *_notify)
1665 {
1666 struct netlink_notify *notify = _notify;
1667
1668 if (state != NETLINK_URELEASE)
1669 return NOTIFY_DONE;
1670
1671 if (notify->pid == wmediumd_pid) {
1672 printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
1673 " socket, switching to perfect channel medium\n");
1674 wmediumd_pid = 0;
1675 }
1676 return NOTIFY_DONE;
1677
1678 }
1679
1680 static struct notifier_block hwsim_netlink_notifier = {
1681 .notifier_call = mac80211_hwsim_netlink_notify,
1682 };
1683
1684 static int hwsim_init_netlink(void)
1685 {
1686 int rc;
1687 printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
1688
1689 rc = genl_register_family_with_ops(&hwsim_genl_family,
1690 hwsim_ops, ARRAY_SIZE(hwsim_ops));
1691 if (rc)
1692 goto failure;
1693
1694 rc = netlink_register_notifier(&hwsim_netlink_notifier);
1695 if (rc)
1696 goto failure;
1697
1698 return 0;
1699
1700 failure:
1701 printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
1702 return -EINVAL;
1703 }
1704
1705 static void hwsim_exit_netlink(void)
1706 {
1707 int ret;
1708
1709 printk(KERN_INFO "mac80211_hwsim: closing netlink\n");
1710 /* unregister the notifier */
1711 netlink_unregister_notifier(&hwsim_netlink_notifier);
1712 /* unregister the family */
1713 ret = genl_unregister_family(&hwsim_genl_family);
1714 if (ret)
1715 printk(KERN_DEBUG "mac80211_hwsim: "
1716 "unregister family %i\n", ret);
1717 }
1718
1719 static int __init init_mac80211_hwsim(void)
1720 {
1721 int i, err = 0;
1722 u8 addr[ETH_ALEN];
1723 struct mac80211_hwsim_data *data;
1724 struct ieee80211_hw *hw;
1725 enum ieee80211_band band;
1726
1727 if (radios < 1 || radios > 100)
1728 return -EINVAL;
1729
1730 if (fake_hw_scan) {
1731 mac80211_hwsim_ops.hw_scan = mac80211_hwsim_hw_scan;
1732 mac80211_hwsim_ops.sw_scan_start = NULL;
1733 mac80211_hwsim_ops.sw_scan_complete = NULL;
1734 }
1735
1736 spin_lock_init(&hwsim_radio_lock);
1737 INIT_LIST_HEAD(&hwsim_radios);
1738
1739 hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
1740 if (IS_ERR(hwsim_class))
1741 return PTR_ERR(hwsim_class);
1742
1743 memset(addr, 0, ETH_ALEN);
1744 addr[0] = 0x02;
1745
1746 for (i = 0; i < radios; i++) {
1747 printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n",
1748 i);
1749 hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops);
1750 if (!hw) {
1751 printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw "
1752 "failed\n");
1753 err = -ENOMEM;
1754 goto failed;
1755 }
1756 data = hw->priv;
1757 data->hw = hw;
1758
1759 data->dev = device_create(hwsim_class, NULL, 0, hw,
1760 "hwsim%d", i);
1761 if (IS_ERR(data->dev)) {
1762 printk(KERN_DEBUG
1763 "mac80211_hwsim: device_create "
1764 "failed (%ld)\n", PTR_ERR(data->dev));
1765 err = -ENOMEM;
1766 goto failed_drvdata;
1767 }
1768 data->dev->driver = &mac80211_hwsim_driver;
1769 skb_queue_head_init(&data->pending);
1770
1771 SET_IEEE80211_DEV(hw, data->dev);
1772 addr[3] = i >> 8;
1773 addr[4] = i;
1774 memcpy(data->addresses[0].addr, addr, ETH_ALEN);
1775 memcpy(data->addresses[1].addr, addr, ETH_ALEN);
1776 data->addresses[1].addr[0] |= 0x40;
1777 hw->wiphy->n_addresses = 2;
1778 hw->wiphy->addresses = data->addresses;
1779
1780 if (fake_hw_scan) {
1781 hw->wiphy->max_scan_ssids = 255;
1782 hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
1783 }
1784
1785 hw->channel_change_time = 1;
1786 hw->queues = 4;
1787 hw->wiphy->interface_modes =
1788 BIT(NL80211_IFTYPE_STATION) |
1789 BIT(NL80211_IFTYPE_AP) |
1790 BIT(NL80211_IFTYPE_P2P_CLIENT) |
1791 BIT(NL80211_IFTYPE_P2P_GO) |
1792 BIT(NL80211_IFTYPE_ADHOC) |
1793 BIT(NL80211_IFTYPE_MESH_POINT);
1794
1795 hw->flags = IEEE80211_HW_MFP_CAPABLE |
1796 IEEE80211_HW_SIGNAL_DBM |
1797 IEEE80211_HW_SUPPORTS_STATIC_SMPS |
1798 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1799 IEEE80211_HW_AMPDU_AGGREGATION |
1800 IEEE80211_HW_WANT_MONITOR_VIF;
1801
1802 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
1803 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
1804
1805 /* ask mac80211 to reserve space for magic */
1806 hw->vif_data_size = sizeof(struct hwsim_vif_priv);
1807 hw->sta_data_size = sizeof(struct hwsim_sta_priv);
1808
1809 memcpy(data->channels_2ghz, hwsim_channels_2ghz,
1810 sizeof(hwsim_channels_2ghz));
1811 memcpy(data->channels_5ghz, hwsim_channels_5ghz,
1812 sizeof(hwsim_channels_5ghz));
1813 memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
1814
1815 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
1816 struct ieee80211_supported_band *sband = &data->bands[band];
1817 switch (band) {
1818 case IEEE80211_BAND_2GHZ:
1819 sband->channels = data->channels_2ghz;
1820 sband->n_channels =
1821 ARRAY_SIZE(hwsim_channels_2ghz);
1822 sband->bitrates = data->rates;
1823 sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
1824 break;
1825 case IEEE80211_BAND_5GHZ:
1826 sband->channels = data->channels_5ghz;
1827 sband->n_channels =
1828 ARRAY_SIZE(hwsim_channels_5ghz);
1829 sband->bitrates = data->rates + 4;
1830 sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
1831 break;
1832 default:
1833 break;
1834 }
1835
1836 sband->ht_cap.ht_supported = true;
1837 sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
1838 IEEE80211_HT_CAP_GRN_FLD |
1839 IEEE80211_HT_CAP_SGI_40 |
1840 IEEE80211_HT_CAP_DSSSCCK40;
1841 sband->ht_cap.ampdu_factor = 0x3;
1842 sband->ht_cap.ampdu_density = 0x6;
1843 memset(&sband->ht_cap.mcs, 0,
1844 sizeof(sband->ht_cap.mcs));
1845 sband->ht_cap.mcs.rx_mask[0] = 0xff;
1846 sband->ht_cap.mcs.rx_mask[1] = 0xff;
1847 sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1848
1849 hw->wiphy->bands[band] = sband;
1850 }
1851 /* By default all radios are belonging to the first group */
1852 data->group = 1;
1853 mutex_init(&data->mutex);
1854
1855 /* Enable frame retransmissions for lossy channels */
1856 hw->max_rates = 4;
1857 hw->max_rate_tries = 11;
1858
1859 /* Work to be done prior to ieee80211_register_hw() */
1860 switch (regtest) {
1861 case HWSIM_REGTEST_DISABLED:
1862 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1863 case HWSIM_REGTEST_DRIVER_REG_ALL:
1864 case HWSIM_REGTEST_DIFF_COUNTRY:
1865 /*
1866 * Nothing to be done for driver regulatory domain
1867 * hints prior to ieee80211_register_hw()
1868 */
1869 break;
1870 case HWSIM_REGTEST_WORLD_ROAM:
1871 if (i == 0) {
1872 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1873 wiphy_apply_custom_regulatory(hw->wiphy,
1874 &hwsim_world_regdom_custom_01);
1875 }
1876 break;
1877 case HWSIM_REGTEST_CUSTOM_WORLD:
1878 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1879 wiphy_apply_custom_regulatory(hw->wiphy,
1880 &hwsim_world_regdom_custom_01);
1881 break;
1882 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1883 if (i == 0) {
1884 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1885 wiphy_apply_custom_regulatory(hw->wiphy,
1886 &hwsim_world_regdom_custom_01);
1887 } else if (i == 1) {
1888 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1889 wiphy_apply_custom_regulatory(hw->wiphy,
1890 &hwsim_world_regdom_custom_02);
1891 }
1892 break;
1893 case HWSIM_REGTEST_STRICT_ALL:
1894 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1895 break;
1896 case HWSIM_REGTEST_STRICT_FOLLOW:
1897 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1898 if (i == 0)
1899 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1900 break;
1901 case HWSIM_REGTEST_ALL:
1902 if (i == 0) {
1903 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1904 wiphy_apply_custom_regulatory(hw->wiphy,
1905 &hwsim_world_regdom_custom_01);
1906 } else if (i == 1) {
1907 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
1908 wiphy_apply_custom_regulatory(hw->wiphy,
1909 &hwsim_world_regdom_custom_02);
1910 } else if (i == 4)
1911 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY;
1912 break;
1913 default:
1914 break;
1915 }
1916
1917 /* give the regulatory workqueue a chance to run */
1918 if (regtest)
1919 schedule_timeout_interruptible(1);
1920 err = ieee80211_register_hw(hw);
1921 if (err < 0) {
1922 printk(KERN_DEBUG "mac80211_hwsim: "
1923 "ieee80211_register_hw failed (%d)\n", err);
1924 goto failed_hw;
1925 }
1926
1927 /* Work to be done after to ieee80211_register_hw() */
1928 switch (regtest) {
1929 case HWSIM_REGTEST_WORLD_ROAM:
1930 case HWSIM_REGTEST_DISABLED:
1931 break;
1932 case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
1933 if (!i)
1934 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1935 break;
1936 case HWSIM_REGTEST_DRIVER_REG_ALL:
1937 case HWSIM_REGTEST_STRICT_ALL:
1938 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1939 break;
1940 case HWSIM_REGTEST_DIFF_COUNTRY:
1941 if (i < ARRAY_SIZE(hwsim_alpha2s))
1942 regulatory_hint(hw->wiphy, hwsim_alpha2s[i]);
1943 break;
1944 case HWSIM_REGTEST_CUSTOM_WORLD:
1945 case HWSIM_REGTEST_CUSTOM_WORLD_2:
1946 /*
1947 * Nothing to be done for custom world regulatory
1948 * domains after to ieee80211_register_hw
1949 */
1950 break;
1951 case HWSIM_REGTEST_STRICT_FOLLOW:
1952 if (i == 0)
1953 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1954 break;
1955 case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
1956 if (i == 0)
1957 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1958 else if (i == 1)
1959 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1960 break;
1961 case HWSIM_REGTEST_ALL:
1962 if (i == 2)
1963 regulatory_hint(hw->wiphy, hwsim_alpha2s[0]);
1964 else if (i == 3)
1965 regulatory_hint(hw->wiphy, hwsim_alpha2s[1]);
1966 else if (i == 4)
1967 regulatory_hint(hw->wiphy, hwsim_alpha2s[2]);
1968 break;
1969 default:
1970 break;
1971 }
1972
1973 wiphy_debug(hw->wiphy, "hwaddr %pm registered\n",
1974 hw->wiphy->perm_addr);
1975
1976 data->debugfs = debugfs_create_dir("hwsim",
1977 hw->wiphy->debugfsdir);
1978 data->debugfs_ps = debugfs_create_file("ps", 0666,
1979 data->debugfs, data,
1980 &hwsim_fops_ps);
1981 data->debugfs_group = debugfs_create_file("group", 0666,
1982 data->debugfs, data,
1983 &hwsim_fops_group);
1984
1985 setup_timer(&data->beacon_timer, mac80211_hwsim_beacon,
1986 (unsigned long) hw);
1987
1988 list_add_tail(&data->list, &hwsim_radios);
1989 }
1990
1991 hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup);
1992 if (hwsim_mon == NULL)
1993 goto failed;
1994
1995 rtnl_lock();
1996
1997 err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
1998 if (err < 0)
1999 goto failed_mon;
2000
2001
2002 err = register_netdevice(hwsim_mon);
2003 if (err < 0)
2004 goto failed_mon;
2005
2006 rtnl_unlock();
2007
2008 err = hwsim_init_netlink();
2009 if (err < 0)
2010 goto failed_nl;
2011
2012 return 0;
2013
2014 failed_nl:
2015 printk(KERN_DEBUG "mac_80211_hwsim: failed initializing netlink\n");
2016 return err;
2017
2018 failed_mon:
2019 rtnl_unlock();
2020 free_netdev(hwsim_mon);
2021 mac80211_hwsim_free();
2022 return err;
2023
2024 failed_hw:
2025 device_unregister(data->dev);
2026 failed_drvdata:
2027 ieee80211_free_hw(hw);
2028 failed:
2029 mac80211_hwsim_free();
2030 return err;
2031 }
2032
2033
2034 static void __exit exit_mac80211_hwsim(void)
2035 {
2036 printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
2037
2038 hwsim_exit_netlink();
2039
2040 mac80211_hwsim_free();
2041 unregister_netdev(hwsim_mon);
2042 }
2043
2044
2045 module_init(init_mac80211_hwsim);
2046 module_exit(exit_mac80211_hwsim);
Linux kernel - Deliverables
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